Mold for making metal castings.



T D. WEST.

MOLD PoR MAKING METAL CASTINGS.

APPLICATION FILED PBB.29, 1912.

' Patented Mar. 25, 1913,

4 SHEETS-SHEET?.

wif?? weg if 7 T. D. WEST. MOLD FUR MAKING METAL CASTINGS.

4 SHEETS-SHEET 2.

Patented Mar. 25, 1913.

APPLICATION FILED FEB.29, 1912.

wz' Zne/ed I T. D. WEST.

MOLD POR MAKING .METAL CASTINGS.

APPLIGATON FILEDIBB. 29, 1912.

Pate'mseol` Mar. 25, 1913'.

" 4 SHEETS-SHEET 3.

n Si

T. D. WEST.'

MOLD FOR MAKING METAL CASTINGS.

APPLICATION.I`ILED IEB. 29, 1912.

Patented Mar. 25, 1913.

v 4 SHEETS-SHEET 4.

PATENT OFFRE ,THOMAS D. wEsaQ-o/F CLEVELAND, oir'io.

'l 'MOLD :Fon MAKING METAL CASTINGS.

' To all whom t 'may oonoem:

Be it known that I, THoMAs' D. WEST, a

i vcitizen of the United States of America, re-

for instance, as a` chilled carLwheel.

siding atCleveland, inthe cfunty of Cuyahoga and StatefofJOhio, haveinvented certain new and useful Improvements` in Molds for Making' MetalCastings; and I hereby declare the following to be a full, clear, andexact description of theinvention, such as vwill-enable others skilledin the art to which it pertains to make and use the-sama i Thisinvention relates to improvements in molds forma'king metalcastings, andper- "ftain's more especially to a mold suitable forv use in casting achilled annular object, such,

lOne object ofthisinvention is to produce! l' achilled'car-wheel whichhas the greatest l. de-'pth `and hardness of chilling where the treadandthroatof the wheel are subjected tothe greatest lwear and has less depthof chilling or no chilling atallvwhere `the tread and` {iangearesubjected to little or no wear,

'l vround castingr so that the production of an excessively` chilledcar-wheel is avoided and astronger and longer lived wheel-is produced.

Another object is 'to 'provide theimold with simple, efiicient andreliable means` whereby tliecasting formed in the "mold during the'operation of'themold ismost` accurately' centered and 4kept centeredrela1 *.tivel to the -mold during-the operation of the mold, tothe endof producing a perfect-1y which is uniformly chilled circumferentially.i Another Objectis tp'have-the castingjcen# tering ,means compriseradially shiftable members spaced'and arranged circumferen- .tially ofthe molten-metal-receiving chamber' ofthe mold and toprovidefmeans'where- .by `said casting-'centering members during the`vcooling and horizontal contraction of the casting are shifted inwardly-durin'gthe lateral and"outward expansion ybyheatfof'` `the.chilleror ehill employed in forming. tliev surrounding wall of said'chamber, and`to' return said. casting-centering members` intotheir'outer and normal position'by and dur- 'after the lateralthe chill.

ing the horizontal contractionof the'chill and outward expansion 'of iAnother object is tow'cool the core ofthe tin contactwith the cast-ing.With these objects in view', and tothe end of attaining other advantageshereinafter ltrated -in -theaccompanying drawings.

I sorbing medium to pass through the`core in- Specicaaon arreter?Patent. j Patented Mai-.25,1913 lApplioaton led February 29, 1912.Serial No. 680,688.

proximity tout-helexterior of the core but without contact with themetalarranged next to and surroiuidingthe core so as yto cool said'metfal`without chilling. itduring the chilling'or cooling of the. casting atthe throat and. tread of the wheel, and thereby prevent or greatlyreduce cont-raction- 4strains internally of the casting and produce acar-wheel which is strongerl and better' ableto .withstand the shocksand abuse to which Aa car-wheel is subjected in general Another objectis to provide said' core with a head instrumental in 'forming the 1centrally and longitudinally offthe body of thecore and.ha'vinglahead"arra;nged cen. trally of' and more especially reinforcing thel headof the core.

- Another-object iS `tospirsovide means wherei" by a heat-absorbingmedium, such, for in.-

stance, as air,may be caused to pass endwise through. the core vbetweenvthe core-reinforcing metal. barand the exterior of .the

body o f the core and' at points spaced cir* oumferentia'llyl of saidbarwithout coming appearing, this invention consists in certainfeatluresfof construction,` and combinations 'A and arrangement' ofparts, hereinafter de.- scribed, pointed out in the claims, and illus vl'nV sai'dY drawings, Figure 1 is a centralv vertical section of myimproved mold ready for pouring. Fig. 2, is an enlarged view of aport-ion of Fig. '1. Fig. 3 is a view -cor1espondingfwith Fig. 2,'except that Fig.`-

3 illustrates the lat-eral and outward expan` sion of the chill byheatduringthe-liorizonf 'tal contraction of the casting.

Fig. '4 `is a horizontal section on linea-4, Fig. 2,'lookimg fupwardly.Fig. A5 is a `section online 5--5,`Fig. 8, looking downwardly. Fig. 6 isahorizontal section onl line GMG, Fig. 2',

-ioo

looking downwardly. Fig.A 7 is a horizontal section on line 7-7,2,'.lo'oking upiwardly. Fig. '8 is a horizontal section onlinel8-8,'Fig'.1,looking downwardly. Fig., i

9 is a horizontal section on line 9 9, Fig. l, i

looking upwardly. Fig. l0 isa horizontall section on line -10, Fig. 1,docking downwardly. Fig. 11 is a vertical ,section on line 11-11,. Fig.1, looking inwardly. Figs'. from 2 to 11 4inclusive are drawn on alarger scale than Fig. 1.

` -The mold` illustrated consists in the main of an upper mold-part orcope, a lower mold-part or drag and a central mold-part which is shownformed in the main by asectional chiller or chill.

Referring to Fig-1 of the drawings,-A

- indicates a vertically arranged annular metal casing 'which' forms aport-ion of the lower mold-part .or drag and rests on a horizontallyarranged metal plate a forming the i* bottom of the drag and providedwith :i

vertically downwardly projectingl annular flfanggge 13- serving toelevate said bottom -P above the floor .or support upon which the moldis to be mounted. The dragis rammed with sand or substantiallynon-chilling ma.

, terial, and the Vtop or upper port-ion of the body of packed. sand -14ofthe drag has the contour required to 'form the bottom ofthe casting. Bindicates a vertically arranged suitably supported annular metal casingwhich forms a portion of the. uppermoldpart or cope. The lcope `isrammed' `with sand, and the body of packed' sand 15 of the cope has itsbottom'or lower portion contoured as required to formthe top of thecasting. The cope and t-he` drag are spaced vertically to effect theformation between them of the molten-metal-receiving chamber of themold, which chamber is enlarged diametricallyand annularly at its lQwerend, as at d (see Figs. 1,-2, 3,-and 7). i' j i The central mold-part(see Figs. 1, 2 and 3) is instrumental in vformingthe'surrounding wallofthe char-nberCA and comprises a vertically arranged annular circularchiller or chill h-aving a vertically arranged annular metal body Dforming' the lower. portion ofthe chill, and metal sections EA whichform the upper inner 'annular port-ionof the chill yand are supportedfrom said body. "The body DL of the chill `is preferably of castir'on,whereas the chillesectionsE- may be of steel.` Preferably the body D isinternally of its upper portion wit an annular receSSQo` whichy isconcentric relative to .the.chamber"C;.,Said body-,D has an inL ternalsurfacefl'participating in the formation of the surr'o ,ding wall-of thechamber C and extendingififrom the recess d downwardly to thedlametrically enlarged lower ende of said chamber.4 i The chill-sectionsE I are seated or rest on the bottom of the recess d and extendcircumferentiall'y of the chambei C and areinstrumental in forming theupper portion of the surrounding wall of said chamber.v Thechill-sections E are arranged radially relative to the chamber C v j andhave their internal surfaces or inner ends with the'- in! faces ilush attheir lower rovided ternal surface 18 of the bodyiD of the chill.v

Adjacent chill-sections E abut. against each other at their adjacentside edges.

By the construction hereinbeforedescribed and illustrated in'1'Figs.' 1,2 and 3.ofthe drawings, it .will be observed that the chill` ing body Dof the chill or central mold-part participates vin 'the formation of thesurrounding wall of the chamber. C and has its -internal surface 18extending from the diametrically enlarged lower lend c of said chamberupwardly about half the distance between said' enlarged end. of thechamber4 and the upper end of the chill, and that said chill also has anupper inner annular chillin portion which is formed independently ofgthe aforesaid body7 of the chill and como'sed of sectionsE which arearranged sub-` stant-ially radially of the chill. 'struction of thechill constitutes an important portion oflmy `present invention..v

Figs. 3 and show a wheel-forming casting H inthe mold, and, z.referringto Fig. 3

Said con-` r.-

of the drawings, h indicatesftheannular fiange formed onandfleiiternally of the said casting at .one lendbf'fthe casting, 4whichfiange is shownformed at the lower end of theacasting and has'l 'arounded peripheral surface,.-an`d -the"throalt 16,0f the wheel is formedat the junction of the; inner side o'f said flange with the tread 171.of the wheel.

Theange. of a car-wheel tobe'castfinthe mold illustrated -is obviouslytherefore formed next above the outer portionofL'tlie drag. The lowersection or portion 4of the vico central mold-part (see Figs-1, 2,3, 'and7) r9`is arranged toA form the outer portion of the top Wall and upperdragjis contoured and arranged as required to for-inthe bottom-wall andloivelrp'ortion.' of theA surrounding wall, of saidienlarge-fment of'said chamber. The surrounding wall of the chamber C is formed-"in themain bythe inner faces'of the chil'lf'selctions E and by the internalcircular 'surface-18 of the body D of the chill, and theV tread of'` 'ii .the car-wheel to be cast is formedfat'v said surface 'of-'aid bodyand at said faces., of

saidchilltions E.' The inner `I owerportionaf he 0d IDOf the Chiu isContoured as required to orm the inner portion of the top wall of thediametrical enlargement. c

of the chamber C andto render saidportion.j

of said bodyfinstrumental 'in effectingthoj formation of f the throat16S-of the vwheel;- The sand-body .s preferablyoccupies a recess` 2Oformed in the lo'wer portion of the body D of the' chill and is appliedto the chill in any approved manner, which recess is subdrag-casing'isprovided atjits top and near.

its circumferential surface with a laterally and outwardly facingannular shoulder 22 which is` voverlapped by lugs' 23 formed on.

the lower-end of. t-he bo'dy D of the chill. and spacedcircumferentially of said vshoulder so as to prevent displacement of thesaidl l body ofthe chill'horizontally independently 'of thedra'g. Theshoulderg22 andithe lugs 23 vare'instrumental in centering the body Dofthe chillrelative tothedragduringthe assemblage Aof the componentpartsof` the mold and areobviously relatively arL ranged to accommodatelateral and outward yex ansion by heat of said body ofthe chillindjependently of the drag. The bod of the chill rests at its lugs 23.on the ragcasing/A. vAn annu ar space-24 is formed at the inner sides ofthe vipper `portions of the flugs 23'and between'the body D .of thechill and the" drag-casing A'and arranged. suband' in communicationbetween the lugs 23.

y with the external a'tmospheray The s acel 24 is'arranged between therecess 20 an the lugs 23, and the body of the chill is provided betweensaid .recess 'and :said space with vent-holes 21 shown extending' fromthe top i of said*v recess laterally and outwardly and downwardly tosaid space into whichsai'd vent-holes discharge. Said vent-holest arespacedcircumferentially ofthe recess 20 and permit the escape, to thespace 24 and consequently to the external atmosphere frornthe body s ofsubstantially.non-chillingifiaterial, of' detrimental gases createdwithin said body of substantially non-chilling material by the contactof saidA body -with molten metal 'during'the operation of the-mold. Y

The" body D of the chill (see Figs. 1,7 2, 3, 4, 5, and 6j) is providedat .the outer side ofthe recess-d with upwardly projecting lugs 27 whichare spaced circumferentially of said recess andconsequently.circumferentially of the` chamber C, and the cope-casingB-`is provided with downwardly prof jectingv lugs 28 which rest ontheouter por- A tions of the lugs 27 and are spaced circumferentially of the body D ofthe chill. Ob-. viously therefore the cope is mounted'onthey 65 body D of thech-ill. Each lug 28. is prostantiallyooncentiically relative tothe chill* vided at its lowerlend with alaterally and outwardly projecting shoulder 30 which 'is v overlapped bya` laterally and inwardly facing shoulder 31 formed on the adjacent=-lug27. The lugs 27 and'28 and their shoulders 31 and 30 facilitate .thecentering of the coperelative to the body D of the chill durf ing theassembling of the component parts of the mold, and Asaid shoulders 30and 31 are relatively arrangedto accommodate the 'lateral and outwardexpansion of the body D of thechill by heat independently of the copeand the drag` The chill has -the inner upperportion Vor sections Ethereof overlapped and largely bodyl oft-hegcopearound the chamber C,and said chambery (seeFig. 1) has a central upward enlargement33which'is arrangedin line verticallywith a cavity 34 forming the lower.central'. ortion of said chamber and formedin an ;centrallyof the sandbody 14 .of -the drag. yThe vsand-body 15 of the cope is provided in itsunder side and nextthe inner faces ofthe chill-sections E with anannular recess 35 whichis arranged concentrieally relative -to 'thechilland forms 'an u per annular enlargement of the cham; .ber

,and the outer Aside wall of said enlargement of saidchamber is formedbythe .portion 32 of said sand-body. Thecope and thefdrag of the moldillustrated are shown rammed to fitA them .forcasting a car-wheel whichhas ia hub provided with acentral bore ,extending therethrough", andconsequently :an interiorly `.m etalreinforced covered," as at 32,(seeFig. `2) bythe'sandi baked sand-core having ,a body F shown composedof sand 1s arrangedvertically and centrally of the 4chamber C andextends up.- `wardly through saidchamber fromA th-e bot-` tom of thecavity 34. The sand-body lF'o'f the core is provided at its upperendwithf,

a head f whichi's integralfwithz. said bodyf and forms the -top wall ofthe upward en largement 33 of the-chamber C and the bottom ofa suitablyformed pouring-basin 36,

and said headV is provided (see Figs. 1, 8

and 9) 'with gates 37 which establish communication between said basinand said chamber and consequentlyfor-m inlets for the passage ofmoltenmetal to said cham? ber. kThe pouring-basin 36 isv surrounded by .ametal casing 381 which is connected with the cope-casing B by bars 39extending 4 substantially horizontally through the sandbody 15 of thecope'.

The interior metal reinforcement of the Acore consists of a met-al bar'G which is arranged vertically cent-rally of the sandbody jF of the coreand extends from within the lower end of said 'body upwardly into the.vhead f of-said body Vand is provided atfits z u pperend with a'head g.The core is provided betiveen its exterior and the bai" G withpassageways 40 which (see Figs. and

10) are parallel with and spaced eircumfer-A l ber downwardly to theplate a and commu-v nicates with a passageway 43 formed in and extendingtransversely of vsaid plate, and the l-astmentioned passageway isarrangedto conduct air or heat-absorbing medium under' pressure from asupply-pipe K which is pro'- vided with a normally closed valvels.Thehead g of the bar G is providedwithflaterally and outwardlyprojecting tubular members 45. which are spaced ycircumferenta'ally ofsaid head. Each passagewayrr40"(seeFig.

l) communicates with a hole 44 formed'einf p the head g of the bar G.The holes/44 A(see- Figs. l and 9) are placed in communication' by thetubular members 45 with an annular chamber 46 formed around the head fbetween the upper and lower ends of said head,

which chamber `is placed in communication,V

. by passageways 47 which extend from said 46y and thence through thechamber through the surrounding wall-of the pouring-basin'and` throughthe' cope t0. the top of the cope, with the externalatmosphere. UponAopening the valve c `air or heat-absorbing medium supplied'A by the pipeK is conducted to and through the passageways 40 inthe core `and passesfrom said:

passageways' to and through the tubular members 45 of the head g intothe chamber passageways 47 to the external atmosphere.

I would here-remark that afnot unimpor-.

tant feature of my present invention consists in the hereinbeforedescribed construction of the core, and important to said constructionis thel formation lof the passageways 40 dieA rectly in the sand-body ofthe core between the centrally locatedv metal reinforcement of the coreand the exterior of the core and'externally of and'out of communicationwith but inlproximity to the chamber C, so that said'pa'ssageways areespecially well .adapted for conducting off heat with facility from thecore-surrounding body fof Ametal lduring i' the operation of theV mold.f

Preferably recess a? has' a substantially horizontally arranged bottomwhich (see Figs. l, 2 and 3) is. provided centrally with an annulardepression 49 which extends lc ir.- cumferentially of and isspaced fromand concentric relative to the' chamber;C, and` the chill-sections Erest on said bottom atl each side of said depression.. acent chill.-

w in sections E (see Fig. 6) are in. contact with each other at theiradjacent sides. The chillsections E extend a suitable distance abovetherecess d in the body' D of the chill, and 'eachchill-section E isprovided at its outer sideandlower end with a laterally and outwardlyprojecting flange 50 provided centrally (see Figs. 2,- 3, and 6) with arecess 51 which extends from top to bottom of the Harige.. Eachchill-section E tapers in crosssection toward its upper end and has itsouterside sloping from the top of the flan e 50 of said section'upwardly and inwardly and `exposed to the external atmosphere.Obviouslytherefore the chill-sections E are reduced in thickness towardtheir upper extremities, and it will be' observed therefore i thatthe-chill has .its'upper inner annular portion 4which 1s composed ofsald sections so contoured 1n cross-sectlon, and said portionof thechillhas such dimensions relative .to theA body D of the vchil-l, that-'saidupper inner portion 'of theA chill has a con-y siderably .smallerheat-absorbing capacity 'thansaidibody and that the mean depth ofchilling ofthe tread-forming port-ion of a wheel being cast in the moldis desirably lessfbetween the-cent`ral portion of the tread.

and the nonflanged end ofthe wheel than` between s'aid`- portion of thetread and the throat of the Wheel. HenceI a car-wheel cast in myimproved mold has the greatest depth and hardness of chilling where thetread and throatof I the wheel are subjected to the greatest wear andhas less depth of chilling or is not chilled atall ..where the tread andlflange are subjectedto-little or no wear, so

that the production of-an excessively chilled u longer-lived wheel isproduced. The approximate depth'of chilling of the casting" produeddurngthe operation of myv improvedk I would here remark thatthe recessesf inthe flanges 50 of the chill-sectionsEjcoms Acar-wheel' is avoided and astronger and A mpld is indicated 'by the dotted line A municate with thedepression 4 9 in the'bottom of the recess Zand that sald depression 49and said recessesl'notvonly effect '.a re- 'ductionto aminimum of themachining re quired to .properly fit said sections to the body D of thechill but facilitate the escape intosaid depression of anygrains ofvsan'd Twhich mayA find access'to the j'ints formedA between saidsections E and said body and reduce the chilling influence of said bodyat said joints.- It will be observed also that the "formation of thedepression 49 under'the chill-sections E leaves only uninterruptedContact circumferentiallyof the chamber C between the chill-body D andsaidl'chill-sec tions E under the inner .portions of..saidchillsections, so that thel heat transmitted from the chill body Dto the chill-secti ons E during the 'operation of the mold is reducedtofa minimum. The relativearrangementl "and contouryof the chillbody- Dand the "`ch11l,sec tions E constitute an important por;

tion of my presentinvention.

My invention -also comprises means for removably securingv thechill-sections E to 'chill-sections and is Aclamped down onto or againstsaid anges'by. clampingv plates Z Which are spaced circnmferentiallyoffand;

2o i 1;- iobvious that" any chilllsectionor chillj-sec--jy tions E thatmay have become Worn outor'x' j mutilated from. any'canse can extendover said ring and are secured-preferably removably .by screws 52tothe"body D ofthe ch-ill.

By the construction. just describedl it? is Vbe readily and.'economically replaced. Y u

The casting Aformed inthe mold obviously contracts horizontally ordiarnetricallyl v v'heri.

it cools andtherebyfrees the chill andobvi-- y ously 'during the'irstcooling and 'contrae-'j chill .expands laterally andoutwardly heat.l Notnnimportantitherefoi'e is the-prolvision of 'the'mold tvith simple,etlicient'vand reliable' means whereby; the casting formed in the moldduring the operation of the mold `is most accurately centered and" keptcentered relative to the mold during the operation of the mold, totheendofproducing a perfectly round casting Whichis uniformly chilledcircumferentially of the' casting. My improved casting-centeringmeans(see Figs 1, 2, 3,54, and 5), constituting a valuable portion of:ny-present invention, com-- prise horizontally movablefeasting-center`` ing members M which are' mounted on thevchill-sections E andvconsequently rest 4on the chill. are spaced`andext-end circumferentially of Said casting-centering members M thechamber C at` the upper endLof said` chamber and are vmovablehorizontally and radially'of the chill. `Said casting-center- I. ing-members are normally in their outer position and arranged to move.inwardly into the chamber C. Each casting-centering member-is providedat its chamber-fac-'- ing side with several laterally and in yvardlyprojecting lugs 53 which, as shown inzFigs.

` l, 2*, 3, 4, and 5, are spaced"circumferenti'ally of tliechamber C.- CSaid lugs 'inthe outer and normal position of said casting-centeringmembers, as vshovvn in Figs. land 2, are flush atltheir inner ends Withthe internal' surfaces of the adjacent portiono f the chill andparticipatein the -formationof the sur rounding Wall ofthe chamber C.The porcope. "'lfreferably' each .lug 53 hasoppos'ite -sldes thereofconverging downwardly, and' adjacentyedges of adjacentcasting-centering. members M lare. preferably y beveled,l as

at 54,1and .face upwardly, as' shown in Fig.

tends, as at 55', betweenand 'covers said edges of saidcasting-centering` mem-bers.' -By the Il, `and the'sand-body 4lbfthecope" eXf provision of the casting-centering members y "With thepeculiarly shaped lugs 53 herein- `before de s'cribediand the spacing ofsaid lugs circumferentially of the chamber C and the extension ofthesand-body 15 of the cope bevtween adjacent lugs-of eachcasting-.centering member, my improved casting-centering jmeansisrendered adequately positive, and

"detrimental chilling of the casting formed in the mol-dvbythe`castingfcentering means T Each casting-centeringgmember M has tWolaterally and-outwardly projecting arms m l "which are spacedlcircumferentially of the tion .of` a vcasting formed in 'the mold thechamber C, and a 1aterally boWable leafsaid'casting-centering member andoverlaps lthe `outer.' end-faces of said'arms and in the outer' andnormalY position 'of said casting-v `centering member extends straightbet-Ween 'said arms', as shown in Fig. 4, which spring isattached to oroperatively connected With vsaid armsfi'n any approved manner and said''fspring rests at lts lower edge on a lug 27 of 'the body Dv of thechill, as shown in Figs. l,

2, 3,*and 5,- Which -lug therefore participates in supporting'saidcasting-centering member. ,Two vertically spaced abutments R .for theinner' side of said spring are pro vided, which abutments are 'arrangedcenitrally between 'the arms connected toge'therbysaid'spring a'ndconsist preferably `1 Vof.,two,,vertically 'spaced screws which arearranged horizontally and .substantially radiallyotheChill andA screwed'into an up- Wardly projecting member 29 of a lug 27 of fthe body D ofthechill. Said abutments are therefore adjustable radially of the chill andhave lpreferably such adjustment relative'to the adjacent spring thatthey shall ,engage `the inner side of said spring in the outer andnormal position of' thecasting-centering member operativelyconnected.With said spring. Two abutments T for the outer side of said spring areprovided, Which abutments are spaced longitudinally `of the springandsubstantially 'eqpidistantly from opposite ends respectively ofthe'spring. The outer abutments T for said spring are arranged betweenthe arms mconnected together by said spring-'and the inner'abutments Bfor said spring are arranged centrally between and equidistantly fromsaid outer abut-- mentsl The outerl abutments T for said springpreferably comprise two screwsl I would'here'xremark that the arms 'm.'o-

the castinglcentering members M possess enough springmes'sflto lrenderthem capablel of yielding to thefconnjectedvspringQ, during the lateralAand 'outward bowing of' saidl springs, andntwill be observed that the rinner abutments R Jfor said springs, during t-heoutward' movement ofsaid abitm'ents,

with the lateral and outward expansion -o the chill by heat during thehorizontal contraction or cooling of the casting, bow said springsoutwardly between the outer abutments T for the springs, as shown inFig, 5; thats'aidl outer abutments T resist the lateral and outwardbowing of the springs from end to en d and thereby cause the'endportionsof thesprings to move laterally and inwardly and thereby actuate thecasting-cen- ,tering membersMinwardly intothe chamber C to keep thecasting accurately centered during the horizontal contraction or coolingo the casting; that the inner abutments R orthe springs, move laterallyand inwardly during the horizontal contraction of thechill afterl the.lateraland outward expansion ofthe chill by heat and thereby peri mitthe springs to' return to their normal positionshown in Fig. 4,'and thatobviously` the return of saidsprings lto their normal 40 positioneiiects the return ofthe castingcentering members Minto their outer and:

normal position.-

It will be lobserved that bythe const-ruction hereinbefore described thepassageway 43 employed in conducting a-heat-absorbing' medium is formedat one end of the mold and arranged externally of and out ofcommunication with the molten-metal-receiving f chamber Gand extends..to the exterior of 5c the mold; that a passageway or passageways 47 areformed at the opposite end of the mold and externally of and out ofcom'- munication with said chamber and extend to the exterior of themold ;A that passageways 40 formed interiorly of4 the core of the moldbetween the central portion of` said core and the exterior of the'coreare outl of communication with `the chamber C but placed incommunication' with the aforesaid -pas- 6o sageways43 and 47 andspacedcircumferentially of said central portion of the core; Y

"that the .valved supply pipey K constitutes means.V whereby aheat-absorbing medium maybe caused to pass through said passage- T waysthat said heat-absorbing medium,

',upon 'opening the' valve of said supplypipe during the operation ofthe mold, is,

conducted to and through the core in proximity to the exterior of thecore but without contact with the metal arranged next to 7o' andsurrounding the core .during the operation of the moldL so asto -coolsaid letal without chilling. it'iurin'g the chilling or cooling ofthe`casting circumferentially andthereby prevent orbgreatly reducecontraction-'strains internally of the castingv and lproduce a cast-ingbetter tted to possess the requisite strength and abilityto successfullys withstand shocks and abuse. 'I would also remark that the portion'32of the 'sand- 80 i4 body 15 ofthe cope is carried'by and -with the llugs53 of the casting-centering members M, as-shown in ,ligs 3 and 5,during" the inward movement of saidv casting-centering members. g5

What Iclaim isj:--V

l. In a mold for making metal castings, the combination, with movablecasting-centering members spaced ciroumferent-ially of yand normally'arranged to move inwardly 90 into the 'molten-metal-receiving chamber of(the mold, of'springs arranged to actuate the, casting-centeringmembers, and means 'whereby the springs are caused to actuate thecasting-centering lmembers inwardly95 during the cooling andvhorizontalcontraction of t-he casting formed in said chamber. 2.I'n a mold lhavinga circular moltenmetal-receiving chamber,` the combination, withhorizontally movable casting-centering members extending and spacedcircumfer-Y entially of and normally arranged to move. inwardly `intosaid chambery'of springs ar- 'ranged at the outer sides of andoperatively connected with the casting-centeringmembers, and means.whereby Ithe springs are caused to actuate the casting-centeringmembers inwardly during the cooling .and horizontal contraction of thecasting vformed in said chamber. 1 l

3.111 amold havihg a circular moltenmetal-receiving chamber, thecombination, with horizontally movable casting-centering Amembersextending andspaced circumferentiallyof and normally `arranged to moveinwardly into said chamber, each casting- Acentering memberhavingtwolaterally and y outwardly projecting arms which are spacedcircumferentially of' thech'amber, of a laterally hbowablespringjextending between fand connected` to s aid arms, and meanswherebythesprmg 1s caused toaactuate the connected casting-centeringmember invwardly during the cooling and horizontal" contractionof thecasting formed in said chamber. v Y

4. In a mold having a circular moltenmetal-receiving' chamber, thecombination-,- withhorizonta-lly movable casting-centering membersextehding andsspaced cir'cumferenf'130 nected casting-,centeringmemberlinwardly centering means tocenter the casting dl'lring the lateral andoutward expansion of the during the cooling and horizontal cont-rac'tion of the 'casting formed in slald chamber.A

In amold 'for makinggmetal c ast'ings,

'the combination, with a vertically*arranged clnll participatlng '1ntheformation of the,

molten metal receiving i chamber of the mold, and Acastingcenteringmeans normally.

arranged tobe operated to'center acasting formed in said chamber, ofsprings for' ef-` fecting the'operation of said casting-centering meansto center the casting' formed in. said chambery and .means .whereby thesprings are caused to operatesaidqcastingchill by heat. l y l 6. ln amold for making a'circular metal casting, the combination, with avertically arranged chill participating the formation of the surroundingwall of the moltenmetalfre'ceiving chamber fof the mold, and

movable casting-centering members spaced circumferentially of andnormallyrarranged 'I'toniove'inwardly into said chamber, of. springsloperatively connected withthe cas'tf. ing-centering members, andmeansf'wherebyl `thesprings are--causedgto actuate th'ecasting-centering members inwardly durin'gthe lateral and outwardexpansion'.` o f .the chill 7. In agmold formakingmetalavcastings thecombination, with avertical'ly arranged chill participating in theformati-on of the molten-metal-receiving chamber ofthe mold, -andhorizontally movable casting-centering members extending and spacedcircumfer entlally of and normally arranged tomove inwardly into saidchamber, of laterally fac.-

, y'.ingleaf-'springs arranged at the outer sides of thecasting-centering members, and means whereby the springs are caused toactuate the casting-centering members inwardly the chill by heat. l y

' 8. In a mold for making a circular metal during the lateral andoutward expansion of casting, the combination, withv afverticallyarranged chill participating inthe formation of the surroundingwallbfthe molten-v metal-receiving chamber'of the mold, -and horizontallymovable *casting-centeringmembers extendmgand spaced circumferentiallyof and normally arranged to move `inwardly into said.jchamber, eachcastingcentering member. having two laterally and outwardlyprojecting.spaced'armsg of a spring operatively connected with said arms, andmeans whereby said spring-is caused to actuate thevconnectedcasting-cen'-` tering memberv inwardly during `vthe lateral 9. In, amold for making metal castings,

the combination, 'withl 'a chillparticipating in the formation of the.molten-metal-receivl ing chamber of the mold, and movablecasting-centering members spaced circumferentially of andnormallyarranged to move inwardlyinto said chamber,of springs instrumental inactuating the casting,- centering Aand outward expansion of the chill byheat.

members inwardly and outwardlyvrelative bythe lateral and.outwardexpansion.ofthe chill Vby heat.g .'and having Ithe operationthereof for 'effecting the 'outward movement of the castinglcenteringmembers after saidv expansion of the c hillcontrolled bythe con-"tfosaid chamber and having the operation. thereof for eifecting the`inward moijement of the casting-centering fmembers.controlled tractionofthe expanded cliilll' i j 1 0. a mold for making-metal castingjsvthe'. comblnatlon, .with a vertically arranged -chillv participating 'inthe formation of the molten-metal-receiving chamber of the. y mold, andvmovable .casting-centering mem-A bers spaced 'circumferentially of andnor` mally arranged to move inwardly'into. said chamber, each y castinglcentering member. ,having two laterally and outwardly proj ect-' ingspaced arms,l .of a ;1laterally "bowabler spring extending between andvoperatively connected with said arms two abutmentsu men-ts arearrangedbetweenl said larms and4 spaced longitudinally of the springfandsup-'for the Aouter side of the spring, .which abutported independently oflthe chill, and an abutment for the inner Vside ofthe spring, saidlast-mentioned abut-ment being carried by the chill iand arrangedbetween and spaced fromI the first-mentioned abutments. A l1.' In a moldfor making metal castings,

the combination, with avertically arranged y .chillpa-rticipating in theformation ofthe mol-ten-metal-receiving chamber of the mold, and movablecasting centering members spaced circumferentially "of and normallyarranged to move inwardly into said chamber, each casting-centeringmember having two .laterally and outwardly projecting ber, of a'laterally bowable' spring extendJ arms spaced circumferentiallyof saidchaming between and operatively' connected with said 4arms; twoabutmentsfor the `outer side of the spring, which abutm'entsfare spacedlongitudinally of .the spring and supported independently and adjustablesubstantially radially' of the chill, andan abutment for the inner sidefof the spring, said last-mentioned abutment being carried by the chill'.andarranged between and spaced from the first-mentioned abutments,

l2. Ina mold for making metal castings, the combination, with avertically arranged chill participating inthe formation of themolten-metal-receiving chamber of the mold, and4 movablecasting-centering mem.- bers spaccd circumferentially of and normallyarranged to move-inwardly into said chamber, each casting-centeringmember -having two laterally and outwardly projectingl arms spacedcircumferentially of,I

said chamber, of a laterally bowable spring extending between .andoperatively connected with said arms; two abutments for the outervside'of the spring, which abut-I ments areI spaced longitudinally. ofthe spring and supported independently of the chill, and an abutment forthe inner side of the spring, said last-mentioned abut-ment being-'carried by and adjustable substantially radially of. the chill andarranged betweenand spaced from the first-mentioned abutments. f

13. ln a mold Lfor making metal castings, the combination, with avertically arranged chill participating in the-formation ofthemolten-metalreceiving chamber ofV the mold, and movablecasting-centering meme bers -spaced'-circumferentially of and nor`-mally arranged to move inwardlyinto said chamber, eachcasting-centering member.

having two laterally and outwardly projecting arms spacedcircumferentially of said chamber, of a. laterally facing leafspringextending between and operatively connected with said arms; twoabutmentsfor the outer side of the' spring, which abutments are spacedlongitudinally of the spring andsupported independently ofthe chill. andtwo 'vertically spaced abutments for the inner side of -the spring. Saidlast#` mentioned abutments being ,carried by the chill and -arrangedbetween 'and spaced from the first-mentioned abut-ments.

14. Ina mold for making metalcastings,

the combination, with a vertically arranged chill participating in theformation of the molten-metal-receiving chamber of f the mold,` andmovable casting-centering -meIn-.

bers arranged-over and resting on the chill.-

and spaced and extending circumferentially of and normally arranged tomove inwardly the combination, with a vertically arranged chillparticipating in the formation fof the -v molten metal receiving chamberof the mold, and movable casting-centering members spacedcircumferentially of and normally arranged to move inwardly into saidchamber,- each casting-centering member having .two laterally andoutwardly pro jecting spaced arms, and a laterally facing leaf.- springextending between and operatively Y'connected with said arms, of anabutment for the inner side of the spring,

which abutment is Icarried by' the chill and arranged centrallybetweensaid arms, and two screws forming abutments for the outer sideofthe spring, which screws are spaced longitudinallyv of `the spring andsubstantially equidistantly` from opposite ends respectively of thespring and supported independentlyand arranged substantially ra ,diallyof the gchill..

16. .In a mold for making metal castings, the combination, with .avertically arranged chill participating in the'formation of theAmolten-,metal-receiving chamber of the mold, and movablecastingfcentering menibers-'spaced circumferentially of and normallyarranged to move inwardly into said chamber,- each casting-centeringmember having two laterally and outwardly proviecting spaced arms, and alaterally facing` leaf-spring Vextending between and operativelyconnected with said arms, of a screw forming an abutment for the innerside of the spring, which screw is carriedv by the "chill and'arrangedsubstantially radially of the lchill and centrally between said arms,and two .abutments' for the outer side of the spg'mgsaid last-mentionedabutments belng spaced longitudinally of the spring and substantiallyequidistantly from opposite endsl respectively of the. spring andsupported independently ofv the chill.

17. In a mold vfor making metal castings,

the combination, with a lower mold-part or drag; van upper mold-part orcope arranged above and spacedvfrom the drag to form .a

vchamber 'between the drag` and the cope,

which chamber has an inlet for the passage of -molten'met-al to thechamber; a vertically arranged chill participating in the' formation ofthe surrounding wall of said-chamber and being free to expand laterallyand outwardly by heat independently of the cope and drag,andhorizontally movable castingcentering members mounted on the chilland spaced circumferentially of and normally arranged to move inwardlyinto said chamber. each casting-centering member having two laterallyand outwardly spaced arms. of

a' laterally bowable spring extending" besp y Y jf'fwhich abutment isarranged centrally between said arms and carried by the and operativelyconnected with said abutment for the inner side of the" y lAticallyarranged chill instrumental'in formchill, and two abutments' forthe outerisidev of the spring, said last-mentioned abutmnts i I' being`spaced longitudinally of the spring and substantially equidistantly fromopposite ends respectively of the spring and carried by the cope. 18. Ina mold for making a circular castfrom the drag to form a chamber`between the drag and the copeand being rammed with a 'body of packedsand, said sand-body forming the top wallof the chamber; a ver# ing thesurrounding wall offthe chamber, and suitably supported movablecasting-centering members spaced circumferentially of and normallyarranged to move inwardly `into the chamber, each casting-.centeringmember being provided at its chamber-facing side with several laterallvand .1nw-ardly projecting lugslwhich pardpatei'in the. formation of the*surroundingwall and` 4are spaced circumferentially lof the chamber, thesand-body of vthe cope covering and' extending between the-casting-centering" `..members, and the space between adjacent lugs ofsaid casting-centering member being filled by a portion ofsaid'sandlbody. v

19.l In a mold for making a circular Lcasting, a lower mold-part ordrag; an upper mold-part'or cope arranged above and spaced from theIdrag to form a chamber between the drag and the 4cope and being rammedwith a body of packed sand, said sand-body l formi-ng the'top wall ofthe chamber; a verf tically arrangedchill instrumental in forming thesurrounding wall of the chamber,

and suitably supported movable casting-cen tering members spacedcircumferentially of and normally arranged to move lnwardly into thechamber, each castii'ig-centering member being provided atit-s'chambei'fac j ing side with laterally andinwardly` projecting llugswhich, are spaced circumferentially of the chamber and participate inthe formation of the surrounding wall of the chamber, thesand-body ofthe\cope covering and extendingl between said lugs and'b'etween adjacentportions of adjacent castingcentering members, each lugof each cast.

ing-centering member having its sidesconf -verglng downwardly. 1

Q0. In a mold `formaling metal castings,

a drag; aA cope-arrangedabove and spaced from the drag to form amolte-me'tal-receiving .chamber between` the cope and the drag andhaving a 'pouring-bas'inwhich is arranged centrally of the copeand incommunication with said `chamber;a Acentral mold-part arrangedbet-weenthe cope and the drag and instrumental in forming the `surrounding wallof' said chamber, andyan interlorly metal-reinforced sand-Core arf'ranged centrally ofthe chamber and having lng, a lower mold-part ordrag; an upper l mold-partorcope'arranged above and spaced `10 top t0bottom' of the lchamber and is contoured at its upper end to form/iahead saidsand-body upwardlyinto the headof said sand-body'andte'rminates at its upper end in a head arranged .within said head ofsaid sand-body. 1

2l. In -a mold for-making end vofthe mold and externally offandl outsageway formed at the opposite lefndl'f thg' the exterjo'r'fof vthemold; fa co through. said f charnbl'f-and'lfpr r'iq'rly betwee itscentral aortic y teriorwith assageway" Iwhich rr'anged externalygofland'out o commun' ,circumferentially' of` saidcentral-"portion f the` core,gand means whereby a'heat-absorb-V ing mediummay be said--passageways.` .a s N 22.A In 'a 'moldfor makng-metalicastnga amoltenmetal-receiving,chamber; fa drag pprovidedexternally? of'- and outof commu.-

lway for 'conductin'gz'a heat-.absorbing me` passageway which isarranged. .externally 'of ber and extends to the exterir ofthe mold; acore extending vfromtop. to'bottom ofthe chamber and provided[interior-ly between Asageways which are spaced 'circumferentially' 'ofsaid central portion and extend endwise of the core, said'fpassagewaysin the core being out ofqc'ommlxnicaiion-with said chambei' `but placedin communication with th.' 'aforesaidpassageways in the cope and drag,-and `means whereby a heatabsorbing me-` through saidv dium -may becaused to pass passageway/s. 23. In a mold for making metal castings,Athe combination, with Aa drag;`a cope arr ranged above andspaced fromthe drag to forma molten-metal-receiving chamber bethe drag andVinstrumental in forming-the surrounding wall of said chamber, and amold and externally of and out*iffcomI r'i'iiiiiVl` cation with `saidchamber and eiiterdiilg'to' n i, l tion wjthj `saidchamber but pla-cedin 'com munication .withf the -aforesaid passageways andv spaced and outofcommunication with 'the cham#` its central portion an'd itse'xteriorwithpas' n asand-body 'whichextends vertically `from' forming th bottomof the. pouring-basin, said core having its interior metal-reim. 1-forcement 'consisting of a -metal'bar which is arranged-centrally of thecore andjextends fronrwithin the-lower end 0f the afore- I metalcastings, l a moltenfmetal-receiving chamber; a pas# sageway forvconducting a heat-absorbing medium, which passageway Y is formedf atonef- `of communication with said'clnamber'v andfeX-p 'l Atends (to, the.exterior offthe mold; afpas causeilto ypass"lft'hrough Y tween the'cope Uand the drag; a 'central-L '4 mold-part arranged between the copeandv les '15' u drag andy-having a pouringfbasinxwhich is c arrangedcentrally ofthecope and` in oom-v.

coref'arranged centrally o'f the chamber and extending vertically fromtop to bottomiof the chamber, of means whereby a heat-ao sorbing mediummay be caused to pass ex- 5 ternally of and out of communication withsaid chamber through the mold from one end to ythe other end of the-moldand endwise through the core between the central portion and theexterior-of thecore and at points spaced circumferentiallyfof saidcentral portion of the-core.

24. In a mold for making jmetalcastings', 'a drag; a' cope arrangedabove 'and spaced from.the drag'v to form a molten-,metall-re'- ceivingychamber between the cope and the f -mun-ication" with saidj \chaf1nber,`sa,id cope having passageways `which are out of lcommunicationwith :said chamber and spaced circamferentially O mthe pcuring-basin and'extend tothe exterior of) the'-,mold; a cen-l -tralfmold'part arrangedbetween the cope andthe drag-and instrumental informing the surrounding,wall of said` chamber; a core arranged centrally ofthe chamber andextending from top to bottom-of the cham ber and provided.. interiorlybetween-its cenpassagewayswhich extend cndwiseof the core andare out .ofcommunication with said chamber but laced in communication at the upperendo? the core with the aforesaid assageways in the cope, and meanswhere- 35 y a heat-absorbing medium may be caused to pass through saidpassageways.`

25. In a mold for making metal castings, a drag having a horizontallyarranged plate at the bottom, which plate is provided interiorly Awith apassageway; a cope arranged above and sacedrfrom the drag to form amolten-meta -receiving chamber between'the cope and the drag; a centralmold-part ararranged centrally of the cope and in communicationwith saidchamber ;'a central mold-part arranged between the cope and Vthe dragand instrumental in forming the surrounding wall of said chamberaaninteriorly metal-reinforced sand-core arranged centrally of the chamberand extending from .top to bottom of the chamber, which 27. In a moldfor casting chilledcarwheels, a, central mold-part instrumental informing the surrounding wall of the moltentral portionand the exteriorof the core with ranupper inner -annular chilling portion core Yhas itsinterior metal reinforcement consisting of a metal bararranged centrallyof the, core andextendinggfrom within the lower end into the npperend of.the core and provided-atl its upper end with laterally proentiallyofthe bar, said core being provided between-the aforesaidbar and theexterior *of the core withvpassa'gewaysspaced circumferentially of saidrbar fand extending longitudinally-of the core and placed incommunication with the aforesaid .tubular members, andmeanswhereby aheat-absorbing medium may be caused to pass through said passageways.

metal-receiving'. chamberof the mold, which :chamber is enlargeddiametrically at its l lower end, said mold-part comprising a'chillhaving a vertically arranged annular chilling body which has an internalsurface participating in the formation of said wall ,and extending fromthe diametrically enlarged lower end of said chamber upwardly abouthalf. the dista-nce between said enlarged end vof the chamber and theupper end of the chill, said chill also having an upper inner annularchilling portion which participa-tes in the formation-of -said wall andis formed independently of said body of the chilland tapers toward itsupper end.

`saidlupper portion of the chill only having a part of its ,bottom incontact with said body. I

.28. In a mold for casting chilled carwheels, a central mold-partinstrumental in forming the surrounding wall of the molten-Imetal-receiving chamber of the mold, which vchamber is enlargeddiametrically at. its

lower end, said mold-part comprising a chill having a verticallyarranged annular chilling body provided internally of itsupper portionwith an annular recess which extends circumferentiallv of said 'chamberand has a bottom provided with an annular depression spaced from andextending circumferentially of said chamber, said body having an'internal surface which participates lin. the format-ion of theaforesaid' wall and *extendsl from the aforesaid bottom downwardly tothe diametrcally lenlarged lower end of said chamber, the chill alsohaving which participates in the formation of said wall and is formedindependently of the body of the chill and seated on said bottom betweensaid chamber andthe aforesaid depression.

l29. In a mold for casting chilled car-` wheels, a central mold-partinstrumental in forming the surrounding wall of the molten`metalfreceiving chamber of the-mold,which chamber is enlargedYdiametrically at its Iac- 70 ]ect1ng tubular members spacedcircumferestesa weer. end, Said,maapattmpnging a Chiu having avertically arranged annu-lar chill-v tends". circumferentially of said]chainber,

said body having an internal surface'which participates Yin theformation' of the aforesaid wall and extends` fromy said recessdownwardly tothe diametrically enlarged lower end of said chamber, thechill also "having anupper inner annular chilling por-v tion whichparticipates intheformation of said wall and is formedindependently" ofthe body of' the chill and seated, on the bottom of said recess and hasan unbroken .contact with said bottom, circumferentially of theaforesaid chamber, only-under the inner part of the bottom of saidupperv portion of c the chill.

30. Ina mold "forcasting chilled car.- wheels,` av central mold-partinstrumental in forming the surroundingwall of the moltenmetal receiving'chamber of'the'mold, which f chamber is enlarged diametrically at itslower e'ndjsaid"i 4mold-paggcomprising` a nchillfhaving a verticallyarranged annular chilling' body provided internally of its.

I -upper' portion "with, an annular recess which extendscircumferentially 'of saidchainber andjhas a bottoni which is`,pr`ovided with'anv annularn depression arranged centrally ofsaid'bottom and extending circumferentially of said chamber,.said bodyhaving. an in'y ternal surface" participating in the' formal tion1 'oftheaforesaid wall and extending from said recess. downwardly to lthediametrically enlarged lower end of said 'cham- `ber, said chillhavingpan upper inner annular`chilling portion which participates' in4'the formation of lsaid Awall and is formed independently of the bodyofvthe chill and seated on the aforesaid bottom' a'topposite sides of thedepression in said bottom.

31p. In a mold for castingcar-wheels, a central mold-,part instrumentalin forniing the surrounding wall of the moltenmetal-receiving chamberofthe mold, which chamber is enlarged diametrically at its i lower end,said mold-'part comprising -a chill having a vertically arranged annularchilling-body` provid'ed' internally of its upper portion with an`annular v recessv extending circumfe-ren'tially of :said chamber,` saidbody,

having aniinternal surface participating in the formation of theaforesaid wall and extending from said recess downwardly to theAdiametrically 'enlarged lowerend ofl said' chamber, the chill alsohaving an upper inner annular chilling `portion.which participates 'inthe formation of said` wall and" is formed independently of theu'bodyof'the chill and f seatedofn thefbotto'mof said re-` cess, and meansforpreyenting displacement 'of said upper portionof the chilllupwardlyfrom said body of the Ichill, said means be-- ing arranged externallyand accessible at the upperend of said upper portion'of` the chill..y

32. In' a `mold for casting car-wheels, a centralmoldLpart instrumental'informing the surrounding :wall fythe molten-metal-refl 'ceiving chamberof the mold, whichL chamber is enlargedE diametrically -at its lowerend, said mold-particomprising a chill hav-1 inga vertically arrangedannularchilling -body provided internally of its upper portionlwith anannular recess .extending circumfe'rentially of said chamber, said' bodyhaving an internal surfaceparticipating in the formation o fstheaforesaid-wall and extending from said recess downwardly to thediametrically enlarged lower end4 of said chamber", said `chill havingan upper inner lannular chilling ,portion which participates vin theformation .of saidwall and is formed independently' of the body ofthechill and [seated onand clamped to the bottom of the aforesaidvrecess,` l

wheels a central moldpart.- instrumental in 'forming the surroundingwall'of the moltenmetal-receiving chamber of the mold, which 'chamberisenlargeddiametrically at'its lower end', said mold-part comprising a,chill having a vertically arrangedfannular chillingbody v which hasan'internal surface participating in the formation of said wall and'extending 33. In a moldl for casting "chilleddcarl att :upwardly from.the diamet-rically enlarged chill having a vertically arranged annu archilling' body which has an internal surface participating intheformation of said wall' and extending upwardly from the diamet- -ricallyenlarged lower end ofsaidchamber, said chill also having an upperannular chilling portion which is composed of suit.

ably supported `sectionswhich participate in the formation of said `walland are arranged substant-ially radially relative to said chamber andreduced in' thickness toward. their upperI extremities.

tao'

35. In a mold for cast-ing chilled ycarl -wheels, a central mold-partinstrument-al inf' v,forming the 'surrounding wall of theymoltenmetal-receiving chamber of the mold,.

which'chamber is enlarged diametrically at its lower `end, saidmold-part comprising a i chillv having a vertically arranged annularvchilling body which has an internal surface participating in theformation of said wall and extending from the diametrically enlargedlower end of said chamber upwardly about half: theV distance betweensaid en larged end of the chamber and the upper end of the chill, saidchill also having an upper inner annular chilling portion which iscomposed of sections which participate'in thefformat-ion-of said Walland are seated' on the body of the chill and arranged substa'n'tiallyradially relative to said chamber and taper upwardly in cross-section.

' 36. In a mold for cast-ing chilled carwheels, a central mold-partinstrumental in forming the surrounding wall of the mol`tenmetal-receiving chamber 0f` the mold, which chamber is enlargeddiametrically at its lower end,l said moldrpart comprising a chillhavingv a vertically .arranged annular chilling body which-has aninternalsurface participating in the formation'of said wallv andextending upwardly from the diametri-l cally enlarged lower end of-saidchamber,

. .125 said chill also having an upper inner annufffflar chillingportion which is composed of Sections which are mountedlron theaforesaid bodyand participate in the formation l ofthe aforesaid walland are arranged Substant-ially radially relative to said chamber butremovably secured in place on said body.

37.1n a mold for casting chilled carwheels, a central moldpartinstrumental in forn'iing the surrounding Wall of themolten-meta'i-receiving .chamber of the mold,.

. `which chamber is enlarged diametrically at its lower end, saidmold-part comprisingv a` chill having a vertically arranged annularchilling body which has aninternal surface 4 participatingintheformation of said wall andv extendingupwardly from thediametrically enlarged lower end of said chamben4 said body beingprovided internally of its upper portio n with anAan-nular recess, the\-4l5 chill also having an upper inner annular chilling portion which 1scomposed 'of sec-A tions which participate in the 'format-ion of`said-wall andare arranged radially relative tosaid chamber and seatedand removably, 1:50 .secured to the bottom ofthe aforesaid recess.

38. In a 'mold :for casting chilledv carlwheels, a central`rnoldpart-comprising a chill havinga verticallyarranged annular chilling-bodyparticipating .l in the formaytion of the surrounding wallof the molten-"-'metal-receiving lchamber ofs.,tlie.. mold, .said

. chilll alsofhaving kan upper inner annular chilling portion which 1scomposedof sections which ar`e seated On-said body and ar- 60 rangedsubstantiallyiradially relative to and extend circumferent-ially of@said chamber,

which sections participate inthe formation of the aforesaid wall and'are provided at .wardly projecting flanges a member resting tion ofthe-'aforesaid Walls and are' 'vided at their lower ends with laterallyand their' lower ends withl laterallygand' out.

on said flanges and extending circumferentially of the upper innerannular chilling portion, and means'for preventing upward tendingmember... Y

39. In a mold lfor displacement of saidA circumferentially ex- 1 53:7()

castmg chilled car??- wheels, a central mold-part comprising av chillhaving a vertically arranged annular chilling body participating in theformation of the surrounding wall of the moltenmetal-receiving chamberof the mold, said chill also having an upper inner annular chillingportion which is composed of sections` which are seated on said body andarranged substantiallyfradially relative to and `extendcircumferentially of saidchamber, which sections participate in theformaproo utlv'qvardlyY projecting flanges, said clamping ring restingon said lianges and extendingk horizontally acrossv the outer sides ofsaid M sections, and -mea-nswherebysaid ring is clampeddownwardly-against said flanges. at). In a mold' for casting chilledcar' `ing plates spaced circumferentiallyof and extending over saidclamping ring andse- 'cured to the body o f the chill, Wluch platesclamp said ring to said flanges.

41. 1nAv a mold for casting chilled car- .wheels, a central mold-partcomprising a chill having. avertically arranged annular chilling bodyparticipating 'in the formation of the surrounding wal-lof themolten-metalreceiving chamber of .the mold, said body being provided.internally of its upper 'por- .tion with an annular recess which. is concentricl relatlv'e to said chamber, said chill' "loof having an upperinnerannular chilling' i orltion'vi'rhichispcomposed-Hof sections w ichare seatedon the bottom of ysaid recess,

which sections are arranged substantially radially relative to andextendcircumferentially of said chamber and participate in the formation ofthe aforesaid wall, and means whereby, said sections Aare clamped to thebottom of said recess.

42.1n a mold vfor `casting chilled icarwheels, -acentral mold-partcomprisingv a chill having a vertically arranged annular4 chillingparticipating the formation I of the 'surrounding' Wallof themolten-metallar chilling receiving chamber-of the mold,

said. body being provided internally of its bottom provided With anannula'rdepression arranged centrally f said bottom and extending`circumferentially of said `chamhavmg 'an upper inner annuber, said chillportion composed of sections Y which are seated on said bottom atopposite sides of said depression, Which sections .par-

ticipate in the format-ion of the aforesaid Wall andare provided attheirlowerends outwardly projecting yvith laterally and upper oportlon withan annular recess which 1s con-* centrlc relative to Said chamber andhas lts flanges,

yto bottom of the flanges and in communieationwith the aforesaiddepression 5v a clamping ringrestin'g. on sai flanges and extendinghorizontally across thel outer sides of said sections, and means wherebysaid clamping ring is clamped downwardly against said' flanges. v

In testimony whereof, I sign the foregoing` specieation, in thepre'senceok ,twov

